By: Drilling Engineer
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Report No.
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5862 |
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Discipline/Origin
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Drilling |
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Well
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Norma |
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Date created
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2023/07/30 |
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Project Phase
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Operational |
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LL Type/Classification
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Operational |
Deepsea Yantai
Negative Operational LL with DNO
Norma (25/7-11 S) – Top hole
What happened:
When displacing the 26″ hole at TD a large volume of WBM was needed. And due to VDL the mud column had to be cleaned to fill it with WBM. Filling the mud column lowered the weight (center of gravity) and allowed more mud to be taken onboard.
What was planned:
Displacing 26″ borehole at TD.
What was learned:
To have column tanks cleaned prior to operations.
What actions are required:
To have the column tanks ready cleaned prior to operations.
Deepsea Yantai
What happened in Top hole:
When displacing the 26″ hole at TD a large volume of WBM was needed. And due to VDL the mud column had to be cleaned to fill it with WBM. Filling the mud column lowered the weight (center of gravity) and allowed more mud to be taken onboard.
Displacing 26″ borehole at TD.
To have column tanks cleaned prior to operations.
To have the column tanks ready cleaned prior to operations.
EDITOR
CLOSE LL (testing)
New Lesson Learned
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- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
- RIG
Borgland Dolphin- Island Innovator
- Well
Oselvar- Gomez
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
- RIG
- Island Innovator
- Well
- Gråspett
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
- RIG
- Deepsea Bergen
- WELL
- Brasse
- Rungne
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
NO LLs for INEOS- RIG
- Borgland Dolphin
- WELL
- Fat Canyon
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
- RIG
- Deepsea Yantai
- Well
- Shrek
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
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Kall\u00e5sen<\/a><\/li>\n\t\t\t\t\t\t\t\t
Gr\u00e5spett<\/a><\/li>\n\t\t\t\t\t\t\t\t
Gomez<\/a><\/li>\n\t\t\t\t\t\t\t\t
Oselvar<\/a><\/li>\n\t\t\t\t\t\t\t\t
Rungne<\/a><\/li>\n\t\t\t\t\t\t\t\t
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- Bit<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Logistics<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Mud<\/a><\/li>\n\t\t\t\t\t\t\t\t
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- Time Estimate<\/a><\/li>\n\t\t\t\t\t\t\t\t
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- Bit<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Logistics<\/a><\/li>\n\t\t\t\t\t\t\t\t
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- BHA<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Cement<\/a><\/li>\n\t\t\t\t\t\t\t\t
- QHSE<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Sidetrack design<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Time Estimate<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Shallow Gas<\/a><\/li>\n\t\t\t\t\t\t\t\t
- BOP<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Casing<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Planning<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Planning<\/a><\/li>\n\t\t\t\t\t\t\t\t
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